utils/genrandconfig: drop BR2_PACKAGE_PYTHON_PY_ONLY logic

The option was removed by commit 306839586b (package/python: drop target
package).

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

utils/genrandconfig

@@ -365,8 +365,6 @@ def gen_config(args):
         configlines.append("BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_EUDEV=y\n")
     if randint(0, 20) == 0:
         configlines.append("BR2_STATIC_LIBS=y\n")
-    if randint(0, 20) == 0:
-        configlines.append("BR2_PACKAGE_PYTHON_PY_ONLY=y\n")
     if randint(0, 20) == 0:
         configlines.append("BR2_PACKAGE_PYTHON3_PY_ONLY=y\n")
     if randint(0, 5) == 0: